function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arango, Claudia P.', 1],
    ['Bamber, Roger N', 8],
    ['Bamber, Roger N.', 18],
    ['Hoek, Paulus Peronius Cato', 8],
    ['Lucena, Ruda Amorim & Lindsey Christoffersen, Martin', 1],
    ['Lucena, Rudá Amorim & Christoffersen, Martin Lindsey', 1],
    ['Müller, Hans-Georg & Krapp, Franz', 1],
    ['Scarabino, Fabrizio & Lucena, Rudá Amorim & Munilla, Tomás', 3],
    ['Staples, David A.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=43)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);